NBC has announced that the pilot episode of its new adventure drama, “Heroes,” will be available as a free download from Apple Computer’s iTunes store beginning Sept. 1, more than three weeks before its Sept. 25 network premiere. The free iTunes download will include several commercials from its chief sponsor, Nissan Motor. “Heroes,” which features a large ensemble cast like that of ABC’s “Lost,” concerns the lives of a group of people who discover that they have superhuman powers.

NBC has announced that the pilot episode of its new adventure drama, “Heroes,” will be available as a free download from Apple Computer’s iTunes store beginning Sept. 1, more than three weeks before its Sept. 25 network premiere. The free iTunes download will include several commercials from its chief sponsor, Nissan Motor. “Heroes,” which features a large ensemble cast like that of ABC’s “Lost,” concerns the lives of a group of people who discover that they have superhuman powers.